When Korben stands up, his bed recognizes the change. In response it pulls the messy bed and linens away, where they will be “autowashed,” i.e. automatically sanitized, remade, and sealed in plastic (for bedbug protection?) A fresh bed rises up to replace the messy one as the bedframe slides into the wall.
This automated response might be frustrating if it presumed too much. Say, if Korben got up in the night to use the restroom and came back to find his bed missing, so you’d want it to be as context-aware as possible. And there’s evidence that it’s not too smart a system. Later in the film Cornelius hides in the bed and is nearly suffocated as it tries to autowash the bed with him in it, and wraps him in plastic. I get the comedy in the scene, but really, if it had the sensors to know when Korben was laying down in it, it should have a safety that prevents that very thing when a person is there.
Korben does have manual controls. There are two panels of pushbuttons at waist height, about a meter apart on a sliver of wall above the bed recess. We don’t get great views of these panels, but we do see Korben using one of the buttons to hide General Munro and his cronies in the hideaway refrigerator. In the glimpses we get we can see that there are six buttons on each panel, each button labeled with a high-contrast icon. The leftmost button on each controls the bed. Pressing it when it’s hidden opens it. Pressing it when it’s open closes it and, as we saw before, starts the murderous autowash.
All told it’s a pretty awesome system. The agentive part of getting up is handled seamlessly. The alarm has gone off, Korben’s up, and having the bed disappear saves space in the room and removes the temptation of Korben’s slinking back to bed and making himself late for work. And to summon the bed or hide it manually at some unusual time, Korben has understandable, accessible controls. The main down side is the lack of a safety or panic button, and the comparatively minor annoyance that Korben has to tear that plastic off every night even if he just wanted to pass out after a long day of saving the world.